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245U-E Wireless Ethernet Modem User Manual
Rev Version 2.24
Figure 71
VLAN Example 2
The module is configured with three wireless interfaces. The first one is the normal wireless interface found
on the Network page (wi0), the second (wi1) and third (wi2) are virtual interfaces created on the Repeaters
page. Each interface is configured as an access point and can be setup with unique SSIDs and encryption
settings. In this example, all three wireless interfaces are untagged so that devices joining each of the
networks need not be VLAN-aware.
Untagged data from each of the wireless interfaces are individually bridged with one of the three VLAN-
aware virtual interfaces “VLAN ID 10,” “VLAN ID 20,” and “VLAN ID 30” on the physical Ethernet Interface
that forms a VLAN trunk. Untagged data transferred via the first Wireless interface (wi0) is internally
bridged with the virtual interface VLAN ID 10. Likewise, untagged data transferred via the other two WDS
repeater interfaces (wi1 and wi2) are bridged respectively with VLAN ID 20 and VLAN ID 30. The unique
VLAN tags are used for corresponding Ethernet data, so that the Ethernet port becomes a VLAN trunk.
Because the 245U-E supports flexible VLAN functionality such that any of the available interfaces can have
membership to particular VLAN(s) by assigning membership to one or more VLANs groups—virtually any
possible topology can be achieved.
Figure 72 shows the configuration for the multi-VLAN example described above. Notice that there are four
groups configured, one for management and one for each of the VLAN IDs. The management group only
has the untagged Ethernet interface configured, which means only untagged device on the same IP subnet
can access the modules configuration.